Tractor snowplow



D. A. SARGENT TRACTOR SNOWPLOW Filed Aug. 21, 1923 2 Sheets-Sh et 1 Patented fiiug. 18,- 1925.

inure srarsls Parser me DGN A. SARGENT, OF BANGOR, MAINE, ASSIGNOR TO NORTHERN TRAILER COMPANY,

015 BANGOR. MAINE, A GORPOBATIGN GF MAINE.

' 'rnao'ron SNOWEI/QW.

Application filed August 21, 1923. Serial finiteness.

T (/73 107mm it may concern."

Be it known that I, DoN A. SARGENT, a citizen of the United States, residing at Bangor, in the-county of Penobscot, State 6 of Maine, have invented certain new and useful Improvements in Tractor Snowplows; and I do hereby declare the followmg to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

This invention relates to snow plows, and in particular to plows designed to be drawn by tractors.

where every winter brings heavysnows, the

prohlem of keeping the streets and roadways clear is vital. In accordance with the prescnt'invention, I have designed a snow 0 plow which very satisfactorily solves this problem. My plow is provided with an angular nose to which is secured a rearwardly extending frame supported upon runners and designed to receive a tractor, preferably one of the caterpillar or traction belt type.

The draft connection or connections between the tractor and the plow frame are flexible so that the plow, although preceding the tractor is in reality being pulled by it.

0 It is very important that the draft. conn'ee-' tions be made loose. With rigid connections, thepitching and rolling motion of the tractor is imparted to the plow which not only strains the parts but results in an 5 uneven path. A loose connection obviates these objections. and also makes it possible to turn the plow through sidewise' pushing or pulling by the tractor applied directly near the forward end of the plow. In order to 0 regulate the depth of the cut made by the plow, I have provided means for inclining In the cities and towns of the North.

ing drawings, ind which l is a plan view of the plow shown in operative relation to a tractor; Fig, 2 is a longitudinal tical section taken along line 2+2 of 2, the tractor being removed; Fig. 3 a front elevation of the plow showing the ca wings in raised position; and Fig. 4 is a rear elevation of the plow in the position shown in Fig. 3.

The plow, its draft mechanism and various related parts are shown in full lines in 65 Fig. 1, the tractor, except for its tail piece, being shown in dotted lines. The plow is provided with a l-shaped, suitably reenforced nose 1, the sides or shares of which are made concave so that the snow is rolled, 2'0 not pushed, to the side of the road. Extend- 1ng rearwardly from this nose, is a frame deslgned to receive a tractor, comprising side members 2, rigidly secured to the nose by means of angle irons 3. The'rear end of the frame is completed by means of a transyerse draw bar 4:, through which the plow is drawn by the tractor. Within the frame, and designed to support both it and the nose, is a sled comprising two runners 5 so connected at their forward ends by means of a cross bar 6. The frame is pivotally con? nected to the sled at the two points 7. Near the fo-rward'end of the runners 5, two uprights 8 arise and are connected overhead. 85. by cross bar 9. The inner faces of these uprights are designed to contact with chafing blocks 11 secured to the sides of the tractor as illustrated. Near the rear end'of the frame are situated a rights 1-2, 'which,'.like the uprights-8, are connected across their up er ends by meansof a bar 13. The width of the plow between therunners 5, the length from the crossbar ,6 to the draw barehand the height from the nose at various angles. I have also provided laterally and vertically adjustable wings secured to the frame just behind the 5 nose which supplement the action of the,

nose, pile the snow, and also upon occasion act as rudders. My plow also possesses many other improved features which contribute to its general effectiveness and 9 which will be pointed out in the following description.

In order that the invention may be more clearly understood, I have illustrated a preferred embodiment of it in the accompanythe cross bars and 13 to the round are sufiicicnt to permit-the entry 0 a tractor, the plow beingof course, made in various I sizes suitable for difi'erent size tractors.

I shall now describe in detail the conice struction of the draw bar and the draft mechanism. The draw bar is held in place between two pairs ,ofangle irons 14, one pair secured to the outer face of each side member 2 near. the rear end thereto. A bolt 15 passes through the flanges-of these angles and the ends of-the draw her. To reenforce the structure, Ihave-placedsthese' r pair of double up: 00

of tho angles ailjooont oprigii- 13, s that-in use tho p ll exerted ihro gli he draw bar is monomifitoil oogli. the "frame, at the poini Where if, is raonifoi'ood by these uprights. As drowfoax? musl; necessap ily be removable to permit the enz'y ano exit of the troolor, the bolts 15. may be readily withdrawn to enable the bill to be slid outwardly from between the angle irons i l. The draw bar is provided at its center with shackle 15, wl1icli makes a loose connection with the mil 16 of bile ti'actoi. foo traotive power of the 'lmo'coithus appliool to the plow zmcl frame along; "the center line, ami being applied at the: rear, (he nose:- is free to ride up ancl clown a sufficient amount to insure easy operation Without loss of control. lo oi' lei 'o 1')Z*"Gllil undesirable side play while Q iii retaining the 29 flexibility so import-amt alio swrcossfnl ope alion of film ti). Umw'bor is provided, with two vlziolx are connested at it" vitl digit equalizer 1 on the i tween poi-m1 t:

motion 3Q Tho V Y the di ected through the lion rd upriggliis on the l and. the filial 'oolis ii. on tractor.

There i1" ploy between the poms so film'snon fine 35 say to illlQ :cigl K the) right llit't'iei chafing plow I have provided a, booking cliaiii i9;

49 which coonocts tho nose with tho chain such o fzaut draw The is 'tl' by means of i (l as lo peii forward. and of the ol ilio trim in. This lengili t' b is drawn ooii into the co: or o 5Q tractor with the frame. oi? the tiilzfi' bfil can, toot with so be turned shall now describe my i means for vzi-i-"ying the of ioono. hion of the jnose. As stated; above, the "frame with itS-ottooiiednoso is'pivotziliy mounted upon the olod rangers '5 at the points 7. in order to miso-if-lao nose of the olow, l have pro- 5? viaioo. a pair of lovers 21 one on each side of tho fifzaziiie. llho o lovers are "fulorume-al upon oo 'fGYTELX by moo: of liolio 252;, and i iifili ow/aid owls s'azurocl to time side .lJIlBmbE-Ffi 2 by moons of? biaioltots Those iovoirs 2 -6;?

r 72ml sides in 111 2011- filio plow o= ticai mania These opi y and pa;io-bsi "-ween'l1lie mo double upright 1 117s :z'r'e provided suiliablo ini i'lQlCS 24.- throogh which pins gnocl to pass. To tip the nose, the opera 0'1" boars Gown upon the roar and of levers 231, and as the leverage is considerable n difiiculty in causing the frame and the to swing upwardly about the poiolo T. l iien the desired elovaoion has the pins we inserted ioles 2% just "5 i: :o Tim the nose upwaodly, the rear and rally swims downwardly. The poin's on, however, SPflCQLl only slior; oiisfcanoo Loin real" of the plow, and therefore the animal downward movement of the may end would in any event small. However, in order to avoid this difficulty ow tii'ely, l have provided olongaed 510% 26 in tho side membors at the point; i, so 'ilmt ho is n its most olevoi'ecl is no 2': iolomry the 2 members into have may? onds tigers the side i iliiQ plow so I cured at i. shall now a llle the "(instruction and op ration the Wings which form an important feature of my plow. As the Width of nose is Mxocl, the Width of the path which can be plowed would also be fixe,

Wei-o iL not for the use of auxiliary wings{ and, moreover, the plowed snow would simply pile up in asubstantially straight wall along the yoadwa and might ezisily fall back again, thus partly covering the al.-

ulcly "plowdcl In. order to overcome these filiiiioi" owe ggi'oviiiled a pair of S) for universal a in 4 m 0 nose. A hose lye *blio nose, are suitably filo outer ends n'eci am go Lzmml aojustmeii b OI wingo is effected i zzmmtomeai through 32 loosely L oooo at near the 011m ends or thewings. These bars are provided with suitably SQfi-Cfiil holes or slots 3 designed to fit ova pro ecting studs 35, which oxtoml from and integral with the upper onglo irons ii ilile whioli hold the draw-box". made otrongonoiigh to the i p assure the will in the o I may no T 'iwmtialiy length of of a comparatively lightsnow,

, already opened road only one side of the nose being in use, the wing on; that side, in addition to its action in piling the snow, performs the function of a rudder and holds the nose against the bank. This control is ,efiected by varying the vertical as well a the horizontal angle of the wing.

As the pressure exerted by the wings is considerable, I have found it advantageous to reenforce the studs 35. I have done this, as illustrated, by means of a pin "36 provided at one end with an eye 37 which oncircles the stud 35, and at its other end abuts against a bolt head 38. This pin 36 can be eld in place upon the cross bar by any desired means, such as a turn button on the bolt head 38, not shown. In removing the draw bar, it is, of course, necessary that the pins 36 be also removed.

The plow, as illustrated, and described, has been found by actual test to function eificiently and well. The tractor is actually drawing the plow, but at the same time it follows in the path cut'by the nose at. the

plow, and thus not only secures better traction for itself but does not pack the snow in advanceoff the plowing nose. The 10056.- connections with the frame prevent strains and undesirable side-play at the rear of the tractor while enabling the tractor to turn the plow in the most eilective manner. By/

elevating the nose, it becomes possible to regulate the amount of snow left untouched under the Iplow, and when working in city streets ena ice the plow to ride over inanholes and similar obstructions without danger. Theadjustable wings provide means for manipulating the plowed snow in a variety of ways, so that the best results can be obtained in any given instance.

I claim: a 1. A snow plow comprising the combination of a nose, and means whereby a tractor situated behind the nose :can pull the'plow thrbugh uliiversally flexible connections made with the tail of the tractor.

2. A snow plow comprising the combination of a nose, a rearwardly extending frame secured thereto and designed to receive a tracto .a drew her at the rear of the frame,

and a shackle bolt on the draw bar for.

loosely connecting the tail. of the tractor with the draw bar. Y

3. A snow plow comprising the combination of a nose, a rearwardly extending frame secured thereto and designed to receive a tractor. a sled within the framc,'and uprights on the sled near the forward end thereof designed to contact with chafing blocks on the sides of the tractor.

4. A snow plow comprising the combiuation of a nose, a rearwardly extending frame secured thereto and'designed to receive a tractor. runners supporting the frame, and uprights near the forward end of the frame designed to contact with chafing blocks on v the sides of the tractor."

, 5. A snow plow comprising the combination of a nose, :1 frame secured thereto and designed to receive a tractor of the traction belt type. a sled supporting the frame and means within the frame and sled designed to make contact with the tractor at turns.

.6. A snow plow comprising the combination of a nose. a rearwardly extending frame secured thereto. and designed to receive a tractor. a draw bar at the rear of the frame,

a flexible dra'ltconnection between the draw bar and the tractor. and means near the forward end of the frame designed to maize operative connection with the tractor at turns. 7 f

8. A snow plow comprising the combination-iot a sn'owremoving element, a frame connected thereto designed to receive a tractor, runners supporting the frame, and flexible connections-between the frame and the tractor.

'9; A' snow plow comprising the combination of a snow removing element, a frame connected thereto designed to receive a tractor, runners supporting the frame, and flexible connections between the frame and the tractor, holding the rear end and sides of the tractor out of contact with the frame while permitting contact with the forward sides.

10. A snow plow comprising the combination of a snow removing element, a frame connected thereto designed to regeive a tractor, runners supporting the frame, and flexible connections between the frame and the tractor, holding the rear end and sides of the tractor out of contact with the frame while permitting the tractor to turn the ward end of the frame.

11. A snow plow comprising the combination or a nose, a rearwardly extending frame plowthrough power applied near the for secured thereto and designed to receive a tractor, a draw on r at the rear of the frame, a loose connection between the tail of the tractor and the draw bar, and auxiliary chains connecting the tail of the tractor -With the draw rm to holdthe rear sides of 13. A snov. glow comprising the con'il'yina tron of an angular nose, a rcarwardly ex-v tending frame secured thereto and designed to lteceive a tractor, and a winjpivoted ad.- ja-cent the nose, and adjustable vertically and laterally. v 4

i K'SHOW plow comp icing the combination of Weller/ed noise, a rearwardly extending frame secured thereto and designed to receive a tractor, wings pivoted behind. the ends oi the nose and zulj'ustahle vertical ly id laterally.

lo. it snow plow comprising: 1h comhination of a nose, a rcarwardly extending frame secured thereto and designed to receive a tractor, wings pivoted adjacent the nose and adjustable vertically and laterally, and means for holding the wings in adjusted position.

16. A snow plow comprising the combina tion of a V-shaped nose, a rearwardly extending frame secured thereto and designed to receive a tractor, wings pivoted to the frame behind the nose and adjustable vertically and laterally, a he! pivoted. near the outer end of each wing and provided with spaced holes, and a pin projecting from the frame on each side thereof and designed to pass through the holes in the liar to hold the in adjusted position against the pressure oi? the snow. v

17. A snm plow comprising the combination o1: ii -shaped nose, a rez irwardly 321-,

tending 't'raine secured thereto and designed.

to receive-a tractor, wings pivoted to the frame behind the nose and adjustable vertlcally and laterally, e bar pivoted near the outer end of each. wing and provided with spaced holes, a pinproject-ing from the frerne on each side thereof and designed to pass through the holes in the bar to hold the wings in adjusted position against the eaders pressure of the snow, and means for roenforcing sald pin.

.18. A, snow plow comprising the con1h1na-- tion' of anose, a rearwardly el-ctending frame secured thereto and designed to receive tractor, a sled for supporting the frame, uprights on said frame ,and sled, and cross bars connecting the uprights.

19. In a snow plow, a main frame closed at the sides and front, and provided. with a removable rear cross-sill, whereby a tractor may he driven in end out of position for coupling to the frame.

, 20. In a snow piow, a rigid main frame closed at the sides and front, areniovahle rear cross-sill, and draft apparatus adapted to connect said sill with a tractor dispose r in front thereof.-

21. In a snow-plow, a main" frame adapted to enclose a tractor at the-sides, a derrick rising therefrom, a laterally disposedplow having a forward, pivotal connection with. said frame, and hoisting apparatus carried. by said derrick and having connection with said plow. I 1

in a snow plow, the comhinetion of main frame with side and rear sillqnemhers, runners attached to and adapted to carry 'the frame, plows carried by said frame, and draft apparatus adapted to connect the rear sill with a tractor.

523. A snow plow comprising the combination of a sled, a frame designed to receive a tractor pivotally mounted on the sled for movement-in a vertical plane, a nose secured to the frame, means for pivoting the, frame upon the sled to raise and lower the nose and vary its angle of inclination, a draw bar at the rear of the plow and e flexible draft connection for connecting the draw bar with the tractor.

2%. A snow plow comprising" the combination of a sled, a frame designed to receive tractor pivotally mounted near the rear end of the sled for movement in a vertical plane, a nose secured to the frame, a. lever oneither sideof the plow for pi -ioting the frame npon'the slot to raise and lower nose end vary its angle of inclination :ful' crumoi near theiorward end of the sled and 'comiectedto the frame, a draw harat'the' rear of the frame, and a flexible con.

non a. senonnri, 

